📇 Rhumatologue ·
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Auteur de référence en rhumatologie
50 articles scientifiques publiés — un praticien à la pointe de la recherche
✨ Génération du profil synthétique IA en cours…
Secteur de conventionnement non disponible (médecin hospitalier ou non présent dans l'Annuaire santé CNAM des libéraux conventionnés).
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Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2018
Climacteric : the journal of the International Menopause Society · 2020
Arthritis & rheumatology (Hoboken, N.J.) · 2024
ObjectiveFibroblast‐like synoviocytes (FLSs) contribute to inflammation and joint damage in rheumatoid arthritis (RA). However, the regulatory mechanisms of FLSs in relapse and remission of RA remain unknown. Identifying FLS heterogeneity and their underlying pathogenic roles may lead to discovering novel disease‐modifying antirheumatic drugs.MethodsCombining single‐cell RNA sequencing (scRNA‐seq) and spatial transcriptomics, we sequenced six matched synovial tissue samples from three patients with relapse RA and three patients in remission. We analyzed the differences in the transcriptomes of the FLS subsets between the relapse and remitted phases. We validated several key signaling pathways using quantitative real‐time PCR (qPCR) and multiplex immunohistochemistry (mIHC). We further targeted the critical signals in vitro and in vivo using the collagen‐induced arthritis (CIA) model in rats.ResultsLining and sublining FLS subsets were identified using scRNA‐seq. Differential analyses indicated that the fibroblast growth factor (FGF) pathway was highly activated in the lining FLSs from patients with relapse RA for which mIHC confirmed the increased expression of FGF10. Although the type I interferon pathway was also activated in the lining FLSs, in vitro stimulation experiment suggested that it was independent of the FGF10 pathway. FGF10 knockdown by small interfering RNA in FLSs significantly reduced the expression of receptor activator of NF‐κB ligand. Moreover, recombinant FGF10 protein enhanced bone erosion in the primary human‐derived pannus cell culture, whereas the FGF receptor (FGFR) 1 inhibitor attenuated this process. Finally, administering an FGFR1 inhibitor displayed a therapeutic effect in a CIA rat model.ConclusionThe FGF pathway is a critical signaling pathway in relapse RA. Targeted tissue‐specific inhibition of FGF10/FGFR1 may provide new opportunities to treat patients with relapse RA.
Source PubMed · Recherche par auteur (homonymes possibles, vérifier l'affiliation).
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